Allardyce, 56, was unveiled as the Hammers' new manager after succeeding Avram Grant, who was axed when the east London club dropped back into the Championship after finishing bottom of the table.
The former Bolton, Newcastle and Blackburn boss acknowledged promotion is all the more crucial with the Irons eventually set to move into the Olympic Stadium after next year's Games - and knows there will be plenty of competition for the one of the three coveted places.
"I have to instil a bit of discipline, magic and creativity, a bond among the players and staff to drive us on through a difficult season," said Allardyce.
"Lots of big teams are spending a lot of money to achieve the same goal, so it will not be an easy task.
"I have got to get rid of the hangover which relegation brings to a football club and transform that into a positive as soon as I can."